Valve.



valve proper a relatively simple,

vlar, externally iinrrnns ra rns a rnirr crunch.

ADOLPH W. SCI-IRAMM, OF RIVERTON, NEW JERSEY, ASSIGNOR T0 ELECTED DENTALMANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A. CORPORA- TIONOF PENNSYLVANIA.

Specification of Letters Patent.

Application filed February 4:,

To all whom it may concern: I

Be it known that I, ADOLPH W. SOHRAMM, a citizen of the Uni ed States,residing in Riverton, Burlington county, New Jersey, have inventedcertain Improvements in Valves, of which the following is aspecification.

()ne object of my invention is to provide inexpensive and substantialvalve, particularly designed for use in'connection with atoinizers,which shall have its parts so arranged that the likelihood of theirgetting out of order or requiring frequent attention or repair shall bereduced to a minimum.

I further desire to provide a valve having the above characteristicswhich shall include novel means for controlling the flow of air throughits bodyjand which shall also include a novel arrangement of parts forquickly permitting the escape of compressed .air from the vaporizerhfterthe flow of air thereto shall have been cut off.

These obiects and other advantageous ends I secure in the followingmanner, reference being had to the accompanying drawings,

in which,

Figure 1 1s a vertical section. of a valve constructed in accordancewith my invention, and Fig. 2 is a perspective view of the forming partof the invention.

In the above drawings, 1 represents a hollow body or casing having atone end a tubutapering nozzle 2 designed "tor removable insertion in asuitably formed passage in the cap or cover of a vaporizer,

and provided at its opposite end with a threaded opening for thereception of a cap A. hose connection 4 in the form of an elongatedtube, is threaded into one side of the body 1 and has within it twoportions of different diameters separated by a shoulder forming a seatfor a valve 5 attached to a vaned stem 6 guided in the small diameterbore oi" said hose connection.- The large diameter chamber of thislatter contains a spring 7 whereby the valve 5 is normally held to itsseat and this spring is held.in

.place by a tubular plug 8 secured in the end of the connection.Externally this member 4 is provided with annular ribs 8 for theretention of a rubber hose 9 and has secured upon its main portion aprotecting ferrule part between its head and said portion is to a sourceof such air,

wellas by the pressure VALVE.

Patentedlflec. 7., 1915. 1914. Serial No. 816,687.

10 which extends over the end portion of the hose. I

lVithin the hollow mounted a plunger 11 longitudinally movable in a lineat right angles to the line of movementot the valve and made tubular fora greater part of its length. A head 12 is secured on one end of thisplunger and a spring 13 is confined between this and'the cap 3. Aboutmidway of its length the plungerhas a conical portion 14: and that ofthe body 1 is guided by the cap 3, while its opposite end is slidablyguided in the tubular passage of thcnozzle 2. A portion of the head 12is made of substantially the same diameter as that part of the plungerguided in the cap 3 and carries a soft rubber collar 15 which undercertain conditions cooperates with the head and with the adjacent end ofthe cap ,3 to serve as a valve for preventing leakage of air from thehollow interior of the plunger through ahole 16. 1 second hole 17 opensinto the passage of the plunger to permit of the flow of air into thesame and to the nozzle from the hollow interior of the body 1. I

Under conditions of use, it the nozzle9; should be applied to avaporizer or other device to which it is desired to deliver air underpressure, and the hose 9 be connected obviously all flow from saidsource is prevented by the valve 5 which is kept seated by the spring 7,as of air in the rubber hose 9; the end of the stem 6 of said valveextending into the hollow chamber within the main part of the body 1.The spring likewise acts on the head 12 to hold the eii'- larged part ofthe plunger in engagement with the inner face of the cap 3.

lVhen it is desired to deliver air under pressure to the apparatusattached to the nozzle, the head 12 is pressed inwardly, thus firstcutting off direct communication to the atmosphere through the passage16" and shortly thereafter causing the rubber collar 15 to make airtight connection with the adjacent portions of the cap 3 and said headso as to effectually prevent escape of air from the chamber of the body1 through the opening 17 the passage within the plunger and the outletopening 16.

The continued inward movement of the plunger by reason of the pressureon the. head 12 finally brings the conical part 14 into engagement withthe end of the valve stem 6 and so acts on this latter as to raise thevalve 5 off its seat against the action of the spring 7. Air underpressure is now free to flow from the rubber hose 9 through the plug 8past the valve 5, through the hose connector 4 into the hollow of thecasing 1, thence'through the hole 17 the hollow interior of the plungerstructure and the nozzle 2 to whatever apparatus is supplied therefrom.

When it is desired to cut off the flow of air, the pressure on the head12 is released, whereupon the conical part 1-1 of the plunger disengagesthe stem 6 and permits the valve to seat itself under the action of the.

spring 7 thus preventing further flow of air. The continued movement ofthe plunger under the action of the spring 13 next permits the collar ortubular rubber valve 15 to move away from the end of the cap 3 and' veryshortly thereafter permits the hole 16 to again set up communicationbetween the chamber of the body 1, the interior of the apparatusconnected to the nozzle and the atmosphere. The compressed air in saidapparatus and in the valve structure is thus instantaneously relieved sothat the flow from the discharge nozzle of the vaporizer or otherapparatus is caused to instantly cease when the valve closes, instead ofgradually diminishing with waste and spluttering of drops of liquid fromsaid apparatus.

From the above description it will be noted that the interior of thecasing 1 and of the apparatus to which my valve structure is attached,are cut 0E from communication with the atmosphere just prior to theadmission to them of air under pressure, and that immediately after thesupply of air has been shut off, the air under pressure still remainingin the apparatus and in the valve structure is at once relieved.

I claim 1. The combination of a casing-having an outlet and an inlet; anormally seated valve for the inlet; a manually operative plunger in theform of a tube normally opening outside the casing and movable in a linesub stantially' at right angles to the line of movement of-the valve,for opening the latter at will; with asecond valve mounted on theplunger outside the casing normally in open position and adapted toclose communication between the tube and the out-. side of the casingand to release pressure in the outlet after the first valve is closed.

2. The combination of a casing; a normally seated valve therein; and amanually operativefplunger having a passage for relieving the pressurein the casing and mow able in a line substantially at right angles totheline of movement of the valve, for opening. the latter at will; withmeans for closing comnuraication between the relief passage and theatmosphere under predetermined conditions.

3. The combination of a casing; a normally seated valve therein; a.mannally'operative plunger having a passage for releasing the pressurein the casing and movable in a line substantially at right angles to theline of movement of the valve, for opening the latter at will; and meansfor closing communication between the relief -casing; and a valveoperable by the plunger for closing communication between the reliefopening thereof and the atmosphere before the main valve can 'be opened.

5. The combination of a hollow casing having: an inlet and an outlet; avalve norn ally closing the inlet; a plun 'er for opening the valve,having a passage with branches respectively opening into the outlet. theinterior of the casing and outside said casing for releasing thepressure from the outlet; and means for closingcommunication between therelief passage and the atmosphere before the valve is opened.

6. The combination of a hollow casing having an outlet: a valve forcontrolling the flow of air under pressure to said casing; a plungeroperative at an angle to the line of movement of the valve to open thesame, said plunger having a passage including branches opening into theoutlet. the casing and also to the atmosphere; and means for closingcommunication between the last of said branches and the atmosphere priorto the opening of thevalve.

7. The combinationot a casing having an inlet and an outlet; a normallyseated valve controlling the flow of air through the inlet; aubularplunger movable at right angles to the line of movement of the valve foropening the same. therebeing a passage in the plunger having branchesopening into the outlet. the casing. and into the atmosphere: with meansfor closing communication between the last of said branches of theplunger passage and the atmosphere before the valve is opened.

S. The combination of a casing; a tubular plunger therein having. anopening leading from the casingto a point normallyoutside said casing;a. tubular valve on the plunger mounted to close communication betweensaid opening and the atmosphere after said plunger has moved apredetermined distance; and a normally closed admission valve operative.by movement of the plunger after said tubular valve has been moved to aclosed position. 1

9. The combination of a hollow casing; a tubular plungerin the casinghaving a head outside the same and provided with an opening leading fromthe interior of the casing to the atmosphere; :1 tiihulai; valve on theplunger between the lliul and the casing; and an admissionyalve having astem projecting into position to be operativelv engaged by the plungerafter the tubular valve has closed. communication between said openingand the atmosphere.

10. The combination of a hollow easing having a valve seated inlet andan outlet; a spring pressed valve cooperating with the seat in theinlet; a plunger guided in the outlet and havingan inrlined portion op--,erative to unseat the valve when said plunger is moved in the casing;there being a passage in the plunger having openings into the outlet,the casing and also to the atmosphere; a spring normally holding theplunger with its latter opening in communieation with the atmosphere;and means carried by the plunger for closing communication. between saidlatter opening and the atmosphere when the plunger is moved to unseatthe valve.

11. The combination of a hollow casing having two communicating passagesat right anglesto each otli'erga valve normally seated in one of thepassages; a plunger operative in the other passageiand having aninclined portion for engaging the valve to unseat the same; there beinga passage extending through the plunger to a point 40 thereof normallyoutside the casiugga head for the plunger; a tubular rubber valve on theplunger between the head and the easing; and a spring normally holdingthe plunger in a position with its passage open to th i atmosphere.

"In testiinonv whereof. I have signed my name to this specification, inthe presence of wo subscribing witnesses.

ADOLPH W; 'SCHRAMM.

liitnessesz \VILLTAM F. BRADLEY, Wit. A. BARR.

